Section III. ORGANIZATIONAL MAINTENANCE

TM 11-6130-377-14

Item

No.

Trouble symptom

Corrective measures

DC VOLTAGE meter indicates 0 volt.

Turn on dc power source.

Set switch connected between the inverter and the dc

source to ON.

Replace fuses, if provided, between dc power source

inverter.

DC VOLTAGE meter indicates below or above 143

Adjust the dc-power source to nominal 110 vdc (or at least

vdc, and when DC circuit breaker is operated, it

above and below 143 vcd).

springs to OFF.

Section III. ORGANIZATIONAL MAINTENANCE

and test equipment are specified in table B-1, appendix B

4-11. Scope of Organizational Maintenance

(MAC).

The maintenance duties assigned to organizational main-

tenance of the inverter are listed below with a reference to

4-12. Organizational Preventive Maintenance Checks

the paragraphs covering specific maintenance functions.

and Services

a. Quarterly preventive maintenance checks and

Organizational preventive maintenance checks and

services (para. 4-12).

services of the inverter are required quarterly (para. 4-13).

b. Fuse replacement (para. 4-16).

The quarterly preventive maintenance checks and

services are performed while the inverter is operating and

c. Clean and/or replace air filter element (para. 4-

under the conditions listed below.

14, and 4-15).

a. When the equipment is initially installed.

d. Indicator lamp replacement (para. 4-17).

b. When the equipment is reinstalled after removal

e. Troubleshooting (para 4-18). The required tools

for any reason.

4-13. Quarterly Preventive Maintenance Checks and Services Chart

Sequence

No.

Item

Procedure

References

Cleanliness ................................

Check that the air filter elements are clean.

Para 4-14

Cables .......................................

Visually inspect all exterior cables for kinks, strain, cut,

frayed or otherwise damaged insulation

Indicator Lamps .........................

Check that indicator lamps are in serviceable condition.

Para 4-17

edge.

The fifth air filter is located in the base

4-14. Cleaning Air Filters

subassembly. Use the appropriate procedure given in a

To clean air filters proceed as follows:

or b below to remove or replace the air filters.

a. Remove air filter as described in paragraph 4-15.

a. Front and Side Panel Mounted Air Filters. To

b. Clean the air filter in a solution of water and

remove or replace a front or side panel mounted air filter

detergent.

(fig. 2-1 and 3-1) proceed as follows:

c. Air dry the filter or, if compressed air is available,

(1) Locate the pry-slot in the screen assembly

dry the filter by blowing air (not to exceed 30 psi) through

of the air filter.

it.

(2) Insert the blade of a flat tip screwdriver in

d. Replace the air filter as described in paragraph 4-

the pry-slot of the screen assembly and gently apply

15.

pressure to remove the screen.

4-15. Air Filter Removal and Replacement

(3)

Lift out the filter assembly from its retaining

frame.

The inverter is equipped with five air filters. Two air filters

are located on the front panel assembly, lower edge, and

(4) Insert cleaned (para 4-14) or replacement

two are located on the right hand side panel near the top

air filter into its retaining frame.

Change 1

4-3